换相

Additionally, torque ripples produced by both the nonideal back electromotive force and low-speed current commutation could be restrained.

同时，系统能够有效地抑制非理想反电势和低速时电流换相引起的转矩波动。

The design of time parameters of the three-step commutation method is also proposed.

该文还提出了3步换相法的时间参数设计方法。

The results show that with the proposed method the commutation position could be easily detected.

结果表明，所提方法可方便地实现对TFLSRM换相位置的检测。

This paper analyzes the fundamental theory about the commutation characteristic in the novel DC transmission system.

本文通过系统而深入的研究，建立了新型直流输电系统在换相特性方面的理论研究体系。

Commutation failure is one of the most common failures for the high voltage direct current transmission system .

在特高压直流输电中换相失败也是主要的故障。

Results show that the novel system can better the commutation and probably be used to the weak AC system.

新型直流输电系统改善了换相特性，还可能应用到弱交流系统中。

In software, the method of reducing commutation torque pulsation is brought into effect.

软件设计中采用了换相转矩脉动抑制方法。

The variable reluctance motor is practisely a synchronous motor operated as a brushless D. C. motor with electronic commutation.

变磁阻电机实际上是一种具有电子换相的，以无刷直流方式工作的同步电机。

In addition, equivalent series reactance of excitation transformer worsens the condition of the thyristor operation, and it can bring transient over-voltage at the moment of switching thyristor. The transient over-voltage will endanger the field winding.

励磁变压器的串联电抗恶化了晶闸管的换相工作条件，并在晶闸管元件导通与关断瞬间引起危及到转子励磁绕组安全运行的过电压。

Starting from the steady-state performance of three-phase fully-controlled rectified circuit, which is with large inductive load, we take the front two items of the Maclaurin series of the DC voltage average as approximate formula, with considering of the effect of the AC-side inductance first, and further effect of AC resistance on DC voltage and commutation angle.

本文从带有高感性直流负载的三相全控整流电路稳态工作的物理情况出发，首先考虑了交流侧电感的影响，进而考虑交流侧电阻对直流电压、换相角的影响，将直流电压的平均值用麦克劳林级数表示，取前两项作近似，得出了实用的解析计算公式，并给出了计算步骤，实验证明该结果具有较高的精度。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。